Automatic excavating-shovel.



PATENTED AUG. 2, 1904.

AUTOMATIC EXCAVATING SHOVEL.

APPLICATION FILED MAB.. 27. 190s.

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PATENTED AUG.l 2, 1904.

TI COX.

AUTOMATIC EXCAVATING SHOVBL.

AYPLIGATION FILED MAR.27,1903.

4 SHEETS-SHEET 2.

N0 MODEL.

PATENTED JAUG. 2, 1904.

TI 00X.

AUTOMATIC EXGAVATING SHOVBLI APPLICATION FILED MAB..27, 1903.

4 SHEETS-SHEET 3.

N0 MODEL.

@Hofiznma No. 766,670. PATENTED AUG. 2, 1904.

T. COX.

AUTOMATIC EXCAVATING SHOVEL.

v APPLIGATION FILED 111111.27, 1903.

No MODEL. 4 SHEETS-SHEET 4,

dnozuclJo 'Q -ll E E UNITED STATES Patentel August 2, 1904.

PATENT OFFICE.

AUTOMATIC EXCAVATING-SHOVEL.

SPECIFICATIONforming part of Letters Patent No. 766,670, dated August 2, 1904.

Application flied March 27,1903.

T0 all whom it may concern.-

Be it known that LTHoMAs Cox, a citizen of the United States, residing at Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in Automatic Excavating-Shovels; and I do hereby declare the following' to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to improvements in excavating mechanism, and particularly to an automatically-acting shovel and load-delivering means operated in conjunction therewith.

The object in view is the provision of means for automatically excavating' and delivering a load into a car or at a suitable point by the use of a minimum number of parts.

I/Vith this and other objects in view the invention consists of an excavating shovel, means for swinging' the same from a horizontal to a vertical plane, and means for returning the shovel to its initial position.

It further consists, in combination with an inclosing' housing', of a reciprocating' shovel extending through the wall of said hous'ing and mechanism for swing'ing' said shovel for delivering the load carried thereby and for retracting the shovel into the housing and projecting the same therefrom.

It still further consists, in combination with a suitable endless conveyer, of a verticallyswinging' shovel and means formoving the same fordelivering the load to said conveyer.

It also consists in certain other novel constructions, combinations, and arrang'ements of parts, as will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 represents a longitudinal vertical section taken through the housing' of an excavator embodying the features of the present invention. Fig. 2 represents a top plan view of said housing and surrounding parts, parts being broken away for disclosing interior structure. Fig. 3 represents a view in side elevation of an endless conveyer employed in conjunction with the improved excavator. Fig'. -1 repre- Serial No. 149,874. (No model.)

sents an enlarged detail fragmentary view of the clutch reversing mechanism. Fig. 5 represents a fragmentary top plan view of the clutch mechanism. Fig. 6 represents a top plan view of a fragment of the conveyer-belt employed in conjunction with the conveyer illustrated in Fig. 3. Fig. 7 represents an enlarged detail fragmentary view of a portion of the belt forming a part of the housing' inclosing the excavating-shovel.

In the carrying out of the present invention I employ elements such as are illustrated in detail in the accompanying drawings, in which 1 represents any suitable car or carriag'e upon which is mounted a preferably diagonallypositioned conveyer 2, extending at its rear end in a horizontal plane and discharging at a point convenient for positioning of a suitable car or other receptacle 3. The conveyer 2 consists of any suitable framework 4, within which is arranged a series of 'belt-supporting pulleys 5, end pulleys 6 6, and driver 7, and an endless belt 8, mounted on said pulleys and driver, provided with transverse angleirons 9 9', arranged at intervals thereon, designed when the belt is driven to convey a load from the lower front end of the conveyer and discharge the same at the Lipper rear end thereof. Any suitable belt-tightening device .9 may be employed in connection with one of the pulleys 6 for adjusting the same longitudinally of the framework for controlling the tension of said carrier-belt. The driver 7 consists simply of a drum mounted on a shaft 10 and carrying a driven chain or belt l1, passed about a suitable drum carried by the shaft of the upper pulley 6. The shaft 7 carries a sprocket-wheel 12, which imparts motion to said shaft and receives power through a chain 13, which is driven by a sprocket 14, mounted on a shaft 15, carrying a gear-wheel 16. Mounted transversely of the car 1 is a shaft 17, receiving power from any suitable source, as by means of pitmen 19 and 20, actuated by the pistons of engine, (not illustrated,) said pitmen engaging suitably-formed cranks intermediate the length of the shaft 17. This particular feature of the present device may be altered at will and any common type of crank employed. As

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illustrated in Fig. 2, the shaft 17 may receive power from any suitable source (not illustrated) and carries a' pinion 18, meshing with gear-wheel 16 for driving the conveyer-belt, as above set forth.

At each side of the car 1 is mounted a longitudinally-arranged shaft 27, each provided with a gear 28 at its rear end, meshing with a pinion 29, mounted at the respective end of shaft 17. Each of the shafts 27 is grooved longitudinally, as at 30, and each pinion 28 is provided with a feather engaging said grooves, so that each pinion 28 rotates with its respective shaft, but leaves the said shaft free for longitudinal movement. The forward end of each shaft 27 is journaled in a cross-head 85, slidablyl engaging suitable guides 86. Arranged forwardly of the front end of the conveyer 2 is a housing made up of sides 40 40 and the inclosing belt 31, hereinafter described. At the rear of the belt 31 is mounted a transverse shaft 32, journaled in the cross-heads 85 85. Each of the shafts 27 is provided at its front end with a pinion 33, meshing with a gear 34, carried bythe respective end of the shaft 32. Fixed to the shaft 32 at each end thereof is a sprocket 35, each sprocket carrying a chain 36, extending forwardly and actuating a similar sprocket 37, xed upon a shaft 38, extending parallel to the shaft 32. A connecting and spacing bar 39 pivotally engages the shaft32 near each of the sprockets 35, and each ofsaid bars extends forwardly between the driving and return portion of its respective chain 36 and pivotally engages at its forward end shaft 38, whereby the said shaft 38 always maintains its parallelism relative to shaft 32. Each side 40 is formed with a curved front and upper edge land provided with spaced iianges'41 and 42, forming a guiding-path for the belt 31,' said belt having its opposite edges lying within said path. The inner face of each of the sides 40 is formed with a cam-path 43, extending approximately parallel to the front and upper edge of the respective side, passing downwardly approximately verticallyand curved to a horizontal plane and closing upon itself in front. Spaced inside the cam-path 43 is a cam-rack 44, arranged at all points parallel to said path, and a pinion 46 is carried by each end of shaft 38 in p position for meshing with the teeth of the respective racks 44, the respective end of the shaft 38 extending into and being guided by its corresponding campath 43.

The belt 31 is made up of a chain 47 at each edge, designed to engage and be driven by a sprocket 48, one of said sprockets 48 being mounted at each end of a shaft 49. The links of the chain 47 are connected together by suitable pins carrying rollers 50 50 for engaging the teeth of 'a sprocket-wheel 48. The belt is formed with a web 51, provided with stiffening-plates 5,2, spaced apart a distance sufficient and size and is provided with suitable sleeves and 56 upon each side, slidably surround- ,ing suitable arms 57, which arms are rigidly carried at opposite sides of the shovel-inclosing housing upon a shaft 58, journaled in the sides of said housing and carrying a rotatablymounted gear 59. The gear 59 meshes with a pinion 60, carried by a shaft 61, carrying at its opposite end a gear 62, in turn meshing with a pinion 63, fixed to shaft 49.

Mounted upon one of the shafts 27 is a double-path sleeve 64, formedv with springpressed pawls and 66, extending across the respective paths 67 and 68 of said sleeve. Normally riding in path 68 is a pin 69, carried by cross-head 70, laterally slidable upon suitable supports 71 and carrying a lever-actuating bar 72. rl`he bar 72 pivotally engages at its forward end a lever 73, which lever is pivoted intermediate its length and at its opposite end to a rod 74, carrying an eccentric ring 75, surrounding shaft 58. Fixed to the vshaft 58 is a laterally-projecting bracket 76,

within which is journaled a shaft 77, carrying a pawl 78, projecting in one direction, and a pawl 79, projecting in an opposite direction. Fixed to an annular sleeve projecting laterally from gear 59 is a suitable ratchet-wheel 80,' lying within the vertical planes of the pawls 78 and 7 9, designed at times to be engaged by said pawls respectively. The shaft 77 is of the rocker type and carries at its end opposite that carrying pawls 78 and 79 arms 81 and 82, providedl with laterally-projecting lingers 83 and 84, extending into the path of movement of the eccentric 75, whereby movement of the pin 69 from one path of the sleeve ,64 to the other. is designed to actuate rod 74 and shift 'eccentric 75 for moving one of said fingers 83 or 84 androcking shaft 7 7 whereby the pawl 78 or 7 9, engaging the ratchet-wheel 80, will be lifted and the other pawl droppedinto engagement therewith.

In operation the motor, which, as above stated, may be of any preferred type, is start- IOQ IOS:

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ed, driving the shaft17and through the gears 43. The movement of the shaft 38 up the said cam-paths of course lifts the shovel 54 and raises the front free ends of arms 57, thereby rotating shaft 58, and with it the bracket 7 6, whereby the pawl 7 8, normally engaging ratchet-Wheel 80, Will move said ratchet-wheel,

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rotating gear 59 and the chain of gearing for actuating the sprockets 48. Themovement of the said sprockets is timed exactly with the movement of the shovel 54, whereby the belt 31 will move independently of the shovel in timed relation thereto and will not under any circumstances be required to carry the weight thereof. The rollers 50 of the belt 31 not only serve to take up friction from the sprocketwheels 48, but also travel between the lianges 41 and 42 and prevent frictional contact between the same and said belt, forming travelers while the belt is moving over the spaces traversed between the lower front part and the upper rear part of the housing'. As the operation continues the shovel 54 engages whatever is to be delivered to a carin the way of a load and moves on upwardly until it assumes almost a vertical plane. At this juncture the load is discharged from the shovel by gravity and falls onto a suitable shield 87, arranged to close the space between said housing and thelower front end of the conveyer 2, the said shield guiding the load j ust discharged onto said conveyer, whereupon said load is lifted by the conveyer and delivered to the car 3, that is discharged at the upper rear end of the conveyer onto any suitable vehicle or at any desired point, said conveyer'being actua-ted by the mechanism described. As the shovel rises, as just described, bars 39 necessarily move longitudinally rearwardly, thereby shifting the crossheads 85, with the gearing carried thereby, rearwardly and moving the shafts Q7 longitudinally rearwardly independently of the gear-wheels 28. Then the shovel 54 has assumed the position for discharging its load, the movement of the arms 57 ceases, whereby the belt 31 is stopped and remains in the given position until another load is lifted by said shovel, one of the openings 53 having been brought into register with the plane of ejection of said shovel through the housing during the further operation of the mechanism, as will be described. The shovel 54 now begins to descend, the pinions 46 still walking upon the teeth of rack 44 and limiting the downward movement of said shovel,said downward movement being at a rate equal only to the speed at which the chains 36 are being driven. Of course this speed may be slightly accelerated; but the shovel will be prevented from dropping or increasing in its downward movement materially by the connecting gearing. lVhen the shovel 54 has lowered sutlicient to come inside the belt 31, the shaft 38 in its further travel throughout the length of the cam-paths 43 will cause said shovel to swing vertically downward to a horizontal plane and then horizontally longitudinally forward and projecting through the properlypositioned space 53 to a point beyond the belt 31 in position for a second load. The movement of the shovel 54 is of course made posi` tive through the driving operation of the ychains 36 upon their' respective sprockets, ro-

'remain in its given position during the return movement of the shovel 54. Of course the longitudinal forward movement of the shaft and its vertical longitudinal movement is accomplished through its sliding engagement with the arms 57, and such longitudinal movements of the shovel do not effect any nievement of said arm.

The operation as above set forth may be continued as long as desired; but should the shovel 54 be raised partially and it is then found desirable to lower the same the rotation of shaft 17 would simply be reversed. This reversal in the movement of said shaft would effect a reverse movement in the travel of the pinions 46, thereby lowering the said shovel. As the shaft 17 reverses its movement the pin 69, moving normally in path 68, will contact with pawl 66, pressing the free end thereof against the outer wall of said path and moving laterally into the path 67, whereby the connecting elements will be operated for rocking shaft 77, throwing the pawl 78 out of engagement with ratchet-wheel 80, dropping pawl 79 into engagement with the same. The lowering of the shovel 54 of course necessitates a lowering of the arms 57, whereupon the shaft 58 will be rotated in a reverse direction to its normal movement and the belt 31 thereby reversed in its movement, whereby said belt will be caused to move to its former position independently of the movement of the shovel and in timed relation thereto.

Although I have spoken of the element 54 as a shoveL it should be understood that the same may be any device for lifting' and delivering a load, and I wish my claims construed with respect to the term shovel7 as meaning any form of conveying device capable of the functions attributed thereto.

I have indicated a belt-tightening idler 89, engaging belt 3l for taking up any slack, and of course any other elements may be employed that might be suggested to facilitate the operation of the present improved mechanism, as well as many slight changes be made in the minor details of construction without any deviation from the spirit and scope of the present invention.

In operation I tin'd that at times the shovel 54 comes in contact with some hard substance, occasioning enormous strain, and to relieve such strain I ordinarily retract the shovelthat is to say, permit it to drop back to its normal lowered position and move the said shovel upwardly beyond the plane of the sub- IOO IIO

stance offering such resistance. A jack-screw 90 is arranged beneath the forward truck of the car 1, engaging the platformthereof, which platform is pivotally mounted at its rear end, whereby the forward end may be vertically adjusted through operation of the said jack-screw. The jack-screw is threaded upwardly for lifting the forward end of the said platform, whereby the said shovel and its surrounding parts `are raised vertically until the diagonal plane assumed by the shovel strikes above the substance previously offering resistance to the shovel and the shoveling operation is continued, as above described. When the weight of the softer dirt or lighter substances has been removed, it is usually possible to lift the heavier resistance substances by simply dropping the platform of the car and passing the shovel beneath such substance and actuating the same in the'manner set forth.

In the present application I make no specific claims upon the particular form of conveyer employed, as I employ the same as the subject-matter of a divisional-application, generic claims in combination with the loading mechanism above described being presented in this case.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a device of the class described, the combination with a suitable housing of a swinging shovel and means for. moving said shovel in one direction outside the housing and in the other direction within the housing.

2. In a mechanism of the class described, the combination with a suitable housing of a vertically-swinging shovel, and means for moving the same upwardly outside thehousing and downwardly within the housing.

3. In a device of the class described, the combination with a housing formed with a movable section of a shovel projecting through said movable section, and means for moving said shovel and section in timed relation.

4. In a device of the class described, the combination with a housing having a movable section, of a reciprocating shovel, and means for moving said shovel and movable section of housing in time'd relation.

5. In a device of the class described, the combination with a housing having a movable section, of a swinging shovel, and means for moving said shovel and movable section of housing in timed relation to each other and v.for moving the shovel in one direction outside said moving section and in another direction within the same. a

6. Ina device of the class described, the combination with side walls of a housing of a movable belt completing said housing, a shovel normally projecting through said belt, and means for moving said shovel and belt in timed relation to each other.

7. In a mechanism of the class described,

vthe combination with side walls of a housing of a movable belt completing said housing, a

shovel, and means within the housing for swinging said shovel vertically.

10. In a mechanism of the class described, the combination with the side walls of a housing of a movable belt completing said housing, a shovel extending through said belt, and mechanism for moving said shovel independently of the belt.

11. In a mechanism of the class described, the combination with a fixed portion of housing, of a movable portion completing said housing, a shaft normally extending from said housing, and means for moving the shovel and movable portion independently.

12. In a mechanism of the class described, the combination with a suitable fixed portion of a housing, of a movable belt completing said housing, and mechanism within the housing for moving said shovel and belt independently.

13. In a mechanism of the class described, the combination with an inclosing housing, of a reciprocating shovel extending through the wall of said housing, and a mechanism vfor swinging said shovel while outside the housing and for retracting the shovel into the housing.

14. In a mechanism of the class described, the combination with a suitable housing of a reciprocating and vertically-swinging shovel, and means for reciprocating and swinging said shovel.

15. In a mechanism of the class described, the combination of a suitable housing of a reciprocating and swinging shovel, means for IIO reciprocating said shovel for thrusting the same through the walls of said housing, and means for retracting the same and for swinging the same vertically.

16. In a mechanism of the class described, the combination with a suitable fixed portion of a housing, of a belt completing said housing, a vertically-swinging shovel, and means actuated thereby for shifting said belt relative to the movement of the shovel.

17. In a mechanism of the class described; the combination with a suitable fixed portion of housing, a belt completing said housing, a vertically-swinging shovel, arms carried by said shovel, means for swinging said shovel vertically, and means actuated by said arms for moving said belt relative to the movement of the shovel.

18. In a mechanism of the class described, the combination of a movable belt,avertically swing'ing' shovel, means for swinging said shovel vertically, an arm eng'aged by said shovel, and mechanism actuated by said arm for moving' said belt in timed relation to the movement of the shovel.

19. In a mechanism of the class described, the combination of a vertically movable shovel, means for moving' the same vertically, an arm slidably engaged by said shovel, a movable belt, and mechanism actuated by said arm for moving said belt.

20. In a mechanism of the class described, the combination with a movably-mounted belt, of a vertically movable slidably mounted shovel, mechanism for sliding said shovel for thrusting the same through said belt, and means for moving' the shovel vertically.

2l. In a mechanism of the class described, the combination with an apertured belt, of a swinging' shovel, mechanism for moving said shovel vertically and shifting said belt, and means for thrusting the shovel through the belt in the plane of one of theapertures thereof relative to the adjusted position of the belt.

22. In a mechanism of the class described, the combination of a belt and a shovel, means for moving the same independently of each other, and means for reversing' the movement of said shovel and belt while maintaining their independent action.

23. In a mechanism of the class described, the combination of a movable mounted belt, a shovel projecting' therethrough, means for moving said shovel and belt independently, and mechanism for reversing the movement of said elements.

24. In a mechanism of the class described, the combination of a movably-mounted belt, a shovel extending therethrough, means .for moving said shovel and belt independently, and mechanism for returning said shovel to its orig'inal starting-point independent of said belt.

25. In a mechanism of the class described, the combination of a belt, a shovel extending therethrough, means for moving' said shovel, means for returning said shovel to its initial position, and mechanism for shifting said belt independently of the shovel during one movement thereofl and permitting' said belt to remain stationary during the other movement of the shovel.

26. In a mechanism of the class described, the combination of a belt and sprocket engag'- ing the same, a shovel projecting through said belt, mechanism for swinging said shovel, and means actuated by the shovel for rotating said sprocket.

27. In a mechanism of the class described, the combination of a swinging shovel, means inclosing' said shovel during one portion of its movement, and means thrusting said shovel beyond said inclosure during the remainder of its movement.

28. In a mechanism of the class described, the combination with a rotary shaft and gearing actuated thereby, of an inclosing' belt moved by said gearing, an arm carried by said shaft, a shovel attached to said arm, and means for swinging said shovel.

29. In a mechanism of the class described, the combination with a rotary shaft and gearing actuated thereby, of a belt driven by said gearing, arms carried by said shaft, a shovel extending' through said belt, sleeves on said shovel surrounding said arms, and mechanism for swinging' said shovel.

30. In a mechanism of the class described, the combination of a shaft and a shovel carried thereby, means for moving said shaft bodily for swinging' said shovel, and means guiding said shaft in its movement.

31. In a mechanism of the class described, the combination of a shovel, means for swinging and reciprocating' the same, and a cam g'uiding' the shovel in its movement.

32. In a mechanism of the class described, the combination of a vertically swinging shovel, a cam engaged thereby, and means for moving the same about said cam for swinging and Alongitudinally reciprocating the shovel.

33. In a mechanism of the class described, the combination with a housing' of a movable shovel, a cam engaged thereby for directing the movement of said shovel, and means for moving' said shovel subject to the g'uide of said cam whereby the shovel may be laterally thrust beyond the walls of said housing and Withdrawn within the same.

34. In a mechanism of the class described, the combination with a suitable housing', of a cam within the same, a shovel engaging such cam, and means for moving' the shovel about the cam whereby the shovel may be swung vertically and laterally, thrust beyond the walls of said housing' and retracted within the same.

35. In a mechanism of the class described, the combination with a suitable housing of a cam within the same, a shovel engaging said cam, and means for movingsaid shovel subject to the g'uide of said cam.

36. In a mechanism of the class described, the combination with a suitable cam of a shaft engaging the same and guided thereby, a shovel carried by said shaft, and means for moving the shaft.

37. In a mechanism of the class described, the combination with a suitable housing, of a cam within the same, a vertically-swing'ing reciprocating' shovel engaging' said cam, and means for driving' said shovel about the cam.

38. In a mechanism of the class described, the combination with side walls spaced apart and formed with cam-paths, of a shovel, and means carried thereby engaging said paths.

39. In a mechanism of the class described,

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the combination with side walls of'a housing, of a swinging andreciprocating shovel mounted between the same, and means carried by the walls for guiding said sliovel in its movement. i

40. In a mechanism of the class described, the combination with side walls of a housing,

. of a swinging shovel mountedbetween said walls, and means carried by the walls guiding said shovel in its movement.

41. In a mechanism of the class described, the combination with side walls of a housing, of a vertically-swinging and reciprocating shovel between said walls, and means for guiding and directing said shovel in its movement.

42.` In a mechanism of the class described, the combination with suitable side walls of a housing, of a shovel swinging between said walls, a cam carried by one of said walls, and means for directing the said shovel about said cam.

43. In a mechanism of the class described, the combination with side walls of a housing spaced apart, each formed with a cam-path, of a shovel between said walls, and means carried by said shovel engaging said paths.

44. In a mechanism of the class described, the combination with the side walls of a housing spaced apart, of a shovel between the same, one of said housings being formed with a campath, means carried'by said shovel at one side engaging said path, means at the other side of said shovel for guiding the same and means for moving the shovel.

45. In a mechanism of the class described, the combination with side walls of a housing formed with cam-paths, and a shovel engaging the same. g

46. In a mechanism of the class described, the combination with suitable side walls of a housing formed with cam-paths, of a shovel,

means carried thereby moving within said paths, and means for moving said shovel subject to the guide of said paths.

47. In a mechanism of the class described, the combination with suitable side walls of a housing spaced apart formed with alined campaths, a shovel, and guiding means carried thereby engaging said paths, counter means carried by the shovel and means on the walls engaged thereby for directing the shovel about said cams.

48. In a mechanism of the class described, the combination with side walls of a housing formed with cam-paths, of a shaft engaging said paths, a shovel carried by said shaft, and means for moving the shaft.

49. In a mechanism of the class described, the combination with suitable side walls of a housing formed with cam-paths, of a shaft having its fr'ee ends extending within said paths, a shovel carried by said shaft, and means for moving said shaft about said paths.

50. In a lmechanism ofthe class described, the combination with suitable side walls of a housing, of cam-paths formed therein, ashovel and shaft-carrying the same and engaging said cam-paths, and gearing engaging said shaft for driving the same about the said paths.

51. In a Inechanism of the class described, the combination with side walls formed with cam-paths, a shaft extending between said walls and engaging said paths, a shovel carried by said shaft, reciprocating gearing for driving the said shaft, and means maintaining the proper spacing of said gearing.

52. In a mechanism of the class described,Y the combination with side walls of a housing formed with cam-paths, of a shaft engaging same, a shovel carried by said shaft, a pinion for moving said shaft bodily, a sprocket-chain for rotating said pinion, andv means spacing said sprocket-chain for retaining the same in proper position.

53. In a mechanism of the class described, the combination with a suitable shovel, of a cam engaged thereby, and adjustable gearing for driving said shovel about the cam.

54. In a mechanism of the class described, the combination with a suitable shovel, ofv a cam engaged thereby, gearing for driving said shovel about the cam, and a rigid bar spacing said gearing.

55. In a mechanism of the class described, the combination with a suitable shovel of a cam engaged thereby, a pinion carried by said shovel, and meansv for driving said pinion about said cam.

56. In a mechanism of the class described, the combination with a suitable driving-gearing, of a shovel, a cam, means carried by the shovel for directing the same about said cam, a chain communicating movement from said gearing to said shovel, and means spacing said shovel and gearing apart.

57. In a mechanism of the class described, the combination with a shovel, of a cam engaged thereby, a driving-gearing, means for communicating movement from said gearing to said shovel.

58. In a mechanism of the class described,

the combination with a vertically-swinging, bodily-reciprocating shovel, of a driving-gearing, and means for imparting movement from said gearing to said shovel. 59. In a mechanism of the class described, the combination of a shovel, means for guiding the same in vertical and horizontal movements, and a driving-gearing imparting movement to said shovel.

60. The combination of a cam-rack and shovel, means carried by the shovel engaging said rack, and means for driving the shovel about the rack.

61. In a mechanism of the class described, the combination of a shovel and a cam-rack, andi means for driving the shovel about the rac r.

62. In a mechanism of the class described, the combination of a shovel, a cam, means IOO IIO

carried by the shovel engaging said cam, a rack parallel to the cam throughout its length, and a gearing carried by said shovel meshing' with said rack.

63. In a mechanism of the class described, the combination with a movable shovel and a belt movable independently thereof, a shaft driving said shovel, means actuated by the shovel for driving said belt. a clutch mechanism interposed between said driving means and the belt, and means carried by said driving-shaft for throwing' said clutch mechanism into and out of operation.

64. In a mechanism of the class described, the combination with a belt and a shovel, means for moving' said shovel, a shaft actuated by said shovel, a gearing driven by said shaft for moving' said belt, a ratchet-Wheel carried kby a part of said gearing, pawls designed to engage said ratchet-wheel, and means for alternately throwing said paivls into engagement therewith.

65. In a mechanism of the class described, the combination with a shovel, means for moving' the same, and an independently-movable belt, of a shaft actuated by said shovel, gearing actuated by said shaft for driving the belt, a ratchet-Wheel eng'aging' said gearing, a bracket fixed to said shaft, a rock-shaft eX- tending through said bracket, pawls carried by said rock-shaft and designed to engage said ratchet-Wheel, and means for rocking said rock-shaft for controlling the direction of movement of the belt.

66. In a mechanism of the class described, the combination with a shovel, means for moving' the same, an independently-moving belt, a shaft actuated by said shovel, a ratchet- Wheel carried by said shaft, g'earing' connected with said ratchet-wheel for moving' said belt, pawls designed to engage said ratchet-Wheel, arms for throwing' said pawls into and out of engagement, an eccentric ring engaging' said arms for alternately operating the same, and means for actuating' said ring.

6T. In a mechanism of the class described, the combination with a shovel and independently -moving belt, of a driving-shaft for said shovel, a sleeve thereon formed with a double path, spring-pressed pawls extending across said paths, and means traveling' in one of said paths for governing the movement of said belt relative to the movement of the shovel.

(S8. In a mechanism of the class described, the combination with a vertically-swinging shovel, of an endless conveyer mounted with its take-on end Within the plane of discharge from said shovel.

69. In a mechanism of the class described, the combination With a vertically-swinging shovel of an endless conveyer, and means for guiding the discharge from said shovel to the plane of the take-on end of said conveyer.

70. In a mechanism of the class described,

the combination with a vertically-swing'ing shovel of a movable housing, and means for reciprocatingsaid shovel through the housing.

7l. In a mechanism of the class described, the combination with a suitable housing, of a vertically-moving shovel, and means for moving the same in one direction outside the housing' and in the other direction within the housing.

72. In a mechanism of the class described, the combination of a reciprocating and vertically-swinging slidably-supported shovel, and means for swinging said shoveland bodily reciprocating the same.

73. In a mechanism of the class described, the combination with a vertically-swinging' shovel, of a housing moving' With said shovel, and means for adjusting' said housing' and shovel vertically.

74. In a mechanism of the class described, the combination with a vertically-swinging' shovel, of means for moving' said shovel in-4 dependently of its swinging.

75. In a mechanism of the class described, the combination with an excavating-shovel, means for actuating' the same, and a platform supporting the same, of means for vertically adjusting said platform.

76. In a mechanism of the class described, the combination with an excavating-shovel, means for actuating the same, a support for the shovel and actuating means, of a device for vertically adjusting' said support.

77. In a mechanism of the class described, the combination with a vertically-swinging shovel, of means for swinging said shovel, means for guiding said shovel in its movement, and means for adjusting' said shovel and g'uidcs vertically.

7 8. In a mechanism of the class described, the combination with an excavating-shovel, means for actuating' the same, and a support for said shovel and actuatingmeans, of a jackscrew eng'aging said support for adjusting the same.

79. In a mechanism of the class described, the combination with an excavating-shovel, means for actuating the same, and a car-platform supporting' said shovel and actuating' means, of a truck supporting said platform, and means carried thereby for vertically adjusting' the platform.

80. In a mechanism of the class described, the combination with a support and an eX- cavating-shovel carried thereby, of a conveyer mounted upon said support, and means for delivering the discharge from said shovel onto said conveyor.

81. In a mechanism of the class described, the combination of a shovel and a cam-rack, a pinion carried by the shovel meshing with the teeth of the rack and means for rotating said pinion.

82. In a mechanism of the class described, the combination with an excavating-shovel, a

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mechanism for actuating the same of means for vertically swinging and longitudinally adjusting said shovel and mechanism.

83. In a mechanism of the class described, the combination with side Walls of a housing and a movable belt carried thereby, completing said housing, means carried by said Walls for actuating said belt, a shovel supported Within said housing and means for moving said shovel and belt in timed relation.

84. In a mechanism of the class described, the combination with a pivotallymounted support, of a vertically-swinging shovel carried thereby, a movably-mounted housing moving with said shovel, and means for swinging said support upon its pivot for altering the horizontal plane of the housing and shovel.

85. In a mechanism of the class described, the combination With/a shovel, of means for actuating the same, a guide for directing said shovel, a longitudinally-reciprocating, rotatably-mounted shaft, a bar retaining said shovel in engagement with said guide, and means for transferring movement from said shaft to said shovel-actuating means.

86. In a mechanism of the class described,

l the combination with a shovel, of guides therefor, longitudinally-mountedA bars lretaining said shovel in engagement With said guides, a shaft carrying the free ends of said bars, means forrotating said shaft, and meansfor imparting movement from said shaft to said shovel.

87. In a mechanism of the class described, the combination With a shovel, of a pinion carried thereby, a cam-rack engaged by said pinion, a longitudinally-movable bar for retaining said pinion in engagement with said rack, a shaft carrying the free end of said bar,

a longitudinally-movable, rotatably-mounted.

THOMAS COX.

Witnesses:

BENJ. IRWIN, P. E. THIAU. 

